The shared file has to be public on the web. Any other choice won’t work. RelatedSome URLs are being converted to attachments but not all.The attachments are getting deleted after being uploaded.Related ArticlesThe new attachment thumbnails are showing as gray icons.How to verify that my URLs are valid and can be converted to attachments?How to create a field that converts an image URL to an image file in Airtable?How to import Dropbox images directly to Airtable?I have multiple URLs in a field, but only one URL is being converted to an attachment.